Main Features   Freesccale ARM9 MC9328MX21 Dragonball series processor 　266MHZ frequency, maximum 400MHZ   Embedded hardware MPEG-4 encoder/decoder, supporting    multi-media acceleration, 3D graphic   USB OTG, supporting hot plug   CIF(352x288) format image 30fps, real time transmission   Supporting 640*480/1.3 mega/2 mega pixels CMOS sensor,    analog camera   Low power consumption, safe and flexible voltage-frequency    power management
Picture	Applicable Fields
	Hand held devices   Digital album   VoIP   Video phone   Video conference   Video interphone for    buildings   Ad terminal   IP surveillance   GPS tracker/navigator   Medical electronic devices   Multi-media terminals   MP3/MP4/PMP player

Detailed description
WKADS-MX21-18 is an Emvideo multifunctional embedded Linux development platform integerated with various interfaces specially designed for hand held devices, video phone, and other applications. This platform employes the high performance embedded processor i.MX21 which integrates several modules including hardware MPEG-4 encoder/decoder, LCD controller, USBOTG, CMOS sensor controller, AC97 audio controller, etc. Moreover, i.MX21 is such a processor not only with upto 400MHz frequency, but also with advantages of low consumption, high integeration, software compatibility, intelligent design. The outstanding features of this processor are as following:
1. Improve video quality
i.MX21 is optimized for mobile to ensure higher quality video and longer standby time. i.MX21 also possesses multi-task process capability to ensure multiple applications run on the mobile device concurrently without effect on performance. Other video features of i.MX21 include:
Supporting real time MPEG4 and H.263 encoding/decoding with maximum 30 fps CIF or QVGA image transmission
Supporting PacketVideo, RealNetworks and Windows Media players
Pre-process for color space convertion and image size adjust
Post-process for Mosaic de-block, de-ring, image size adjust and color space convertion to produce clearer image without image format constraint
2. Intelligent LCD display
i.MX21 possesses intelligent LCD display feature to prolong battery usage and reduce recharge operation. For traditional LCD without storage or integrated controller, individual controller and storage are necessary for buffering image, which means non-stop update and no image change detection in traditional display method, and system performance and battery power are consumed in the procedure. However, because of the internel integrated controller and storage to detect whether and when the image changed, i.MX21 has intelligent LCD display feature to update when image change occures, which will dramatically prolong the battery usage time.
3. Improve security performance
i.MX21 is optimized for the security of mobile communication and trade to help customer perform secure mobile commerce(M-commerce), and help operators detect un-authorized software, pretect self-own architecture, and prevent stealing services, and also help content providers manage the digital copyright. The security structure of i.MX21 is composed of hardware and software, and can satisfy the ciphered operation requirement for secure services and applications. i.MX21 also possesses specific security system features including the supporting for credible computation, secure internel and encrypted data storage, security information accelerator and storage management, etc. All these ciphered operations build sound foundation for supporting for security services and applications including low value trade, protection for embedded technology and other asset, and safeguard for high value trade necessary for global enterprises.
4. Intelligent speed
Intelligent power managment feature of i.MX21 prolongs the duration of mobile devices, which then benifit device users greatly. i.MX21 possesses 3 power modes "run, pause and stop" and advanced power management structure including efficient system clock distribution, low current losing control and frequency convertion during idle state, which ensure users to enjoy functions important to them other than waste time in recharging devices.
5. USB On-The-Go
Customer could connect his mobile devices directly with prepherals such as printer, keyboard or mouse, without PC. So, i.MX21 processor facilitates customer device connection under mobile state and saves cost via dedicated OTG port for external OTG transceiver.
6. Outstanding image processing
Customer could enjoy outstanding performance experience through i.MX21 such as enjoying video program, running image application software like 3D games. i.MX21 has a major bus interface to reduce the consumption in communication with external multi-media co-processor(e.g. ATI multimedia co-processor), and in consequence improve whole system performance. In addition, i.MX21 provides advanced image software standard API such as Mobile Java 3D and OpenGL-ES, and 3-D software engines such as Superscape, HI Corp., Fathammer, etc
WKADS-MX21-18 inherits the core board + mother board structure of WKADS-MXL-16, where core board is only 2/3 name card in size. Based on this package, customer could design embedded application products with small size and high performance, and shorten the time to market.